#631A12
Closest named color: Reddy Brown (#6E1005). oklch(33.7% 0.106 29.8), rgb(99, 26, 18).
Aa
White text reads best on this color (12.44:1).
About this color
#631A12 is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.106 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.025 away. White text reads best on it, at 12.44:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.106) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.68:1 |
| White text | 12.44:1 |
Values
| HEX | #631A12 |
| RGB | rgb(99, 26, 18) |
| HSL | hsl(6, 69%, 23%) |
| OKLCH | oklch(33.7% 0.106 29.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #631A12 | 12.44:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #631A12 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #631A12 text on white | 12.44:1 | AAA | Lc 97.4 | Preferred for body text |
| #631A12 text on black | 1.68:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E5E1
oklch(93.7% 0.023 31.1)
-
Step 200
200
#F5CFC8
oklch(88.5% 0.044 30.2)
-
Step 300
300
#F0AEA2
oklch(81% 0.08 30.5)
-
Step 400
400
#E58070
oklch(70.7% 0.128 30.1)
-
Step 500
500
#DA5B4A
oklch(63% 0.163 30)
-
Step 600
600
#C63C2D
oklch(55.7% 0.177 29.9)
-
Step 700
700
#AA2C1F
oklch(49% 0.165 29.9)
-
Step 800
800
#8A271C
oklch(42.7% 0.136 30)
-
Step 900
900 (this color)
#631A12
oklch(33.7% 0.106 29.8)
-
Step 950
950
#421711
oklch(27% 0.068 30.2)
#631A12 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2F2A10 | 0.113 |
| Deuteranopia (no green cones) | #413A0F | 0.103 |
| Tritanopia (no blue cones) | #6E0219 | 0.036 |
| Achromatopsia (no color) | #343434 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631A12
#631A12
oklch(33.7% 0.106 29.8)
- #003F48
#003F48
oklch(33.7% 0.058 210.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #631A12, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.025
- Claret #680018 ΔE 0.035
- Blood #770001 ΔE 0.045
- Burgundy #610023 ΔE 0.050
- Chestnut #742802 ΔE 0.054
- Wine Red #7B0323 ΔE 0.060
- Maroon #800000 ΔE 0.062
- Bordeaux #7B002C ΔE 0.068
Use #631A12 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.